Rock Crab

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ActiveHidden
Rock Crab
Rock crab (exposed).png
Released2 November 2004 (Update)
MembersYes
Combat level13
Size1x1
ExamineNo one likes crabs...
Combat info
Max hit1
AggressiveYes
PoisonousNo
Attack styleCrush
Attack speedMonster attack speed 4.png
Respawn time50 ticks (30 seconds)
Combat icon.png Combat stats
Hitpoints icon.pngAttack icon.pngStrength icon.pngDefence icon.pngMagic icon.pngRanged icon.png
5011111
Attack icon.png Aggressive stats
Monster attack bonusMonster strength bonusMagic icon.pngMonster magic strength bonusRanged icon.pngMonster ranged strength bonus
+0+0+0+0+0+0
Defence icon.png Defensive stats
White dagger.pngWhite scimitar.pngWhite warhammer.pngMagic icon.pngRanged icon.png
+0+0+0+0+0
Immunities
PoisonNot immune
VenomNot immune
CannonsNot immune
ThrallsNot immune
Advanced data
Monster ID100,102
A player in combat with multiple rock crabs.

Rock Crabs are aggressive monsters that look like harmless rocks while disguised, but attack when walked by. Unlike most other enemies and NPCs, Rock Crabs are not marked with yellow dots on the player's minimap; this is probably due to the crabs' appearance, which camouflages them as rocks.

Players can tell if a rock is a Rock Crab by looking at the rock's shape; Rock Crabs are tall oval shaped while normal rocks in their area are mostly in large clusters of shattered pieces. Another way to tell is by right clicking on them. If the text colour is yellow, it is a Rock Crab. If the text is blue, it is just a prop.

Rock Crabs become tolerant if the player has not left the surrounding area in a certain amount of time (roughly between ten and twenty-five minutes). To make the crabs aggressive again, exit the surrounding area (halfway to the entrance to the village in Rellekka, or by entering and exiting the entrance to Keldagrim) and enter again. You can also find one Rock Crab that will be aggressive, kill it then you can continue killing other crabs. As they are "dormant" until "awoken" by a passing player, rock crabs cannot be attacked until they are made aggressive once more.

Rock Crabs are excellent for training at all combat levels due to their low Defence and high Hitpoints, though low level players should consider bringing food, although the more numerous, closer-knit and higher health sand and ammonite crabs have made rock crabs less popular amongst players.

Locations[edit | edit source]

Location Levels Members Spawns Map
North of Rellekka13Member icon.png34Maplink
Waterbirth Island13Member icon.png19Maplink
West of Mount Quidamortem13Member icon.png28Maplink
Waterbirth Island Dungeon13Member icon.png18Maplink
Brine Rat Cavern13Member icon.png4Maplink

Drops[edit | edit source]

The following drop rates are provided by Jagex, unless otherwise specified.

The average Rock Crab kill is worth 114.27.

Weapons[edit | edit source]

Item Quantity Rarity Price High Alch
Bronze pickaxe.png: Rock Crab drops Bronze pickaxe with rarity 6/128 in quantity 1Bronze pickaxe16/128810
Iron pickaxe.png: Rock Crab drops Iron pickaxe with rarity 5/128 in quantity 1Iron pickaxe15/12831684

Seaweed[edit | edit source]

Item Quantity Rarity Price High Alch
Seaweed.png: Rock Crab drops Seaweed with rarity 4/128 in quantity 1Seaweed14/128311
Seaweed.png: Rock Crab drops Seaweed with rarity 4/128 in quantity 2Seaweed24/128622
Seaweed.png: Rock Crab drops Seaweed with rarity 2/128 in quantity 5Seaweed52/1281555
Edible seaweed.png: Rock Crab drops Edible seaweed with rarity 2/128 in quantity 2Edible seaweed22/1282242

Ores[edit | edit source]

Item Quantity Rarity Price High Alch
Tin ore.png: Rock Crab drops Tin ore with rarity 4/128 in quantity 3Tin ore34/1282763
Iron ore.png: Rock Crab drops Iron ore with rarity 2/128 in quantity 1Iron ore12/12812710
Coal.png: Rock Crab drops Coal with rarity 2/128 in quantity 2Coal22/12833654
Copper ore.png: Rock Crab drops Copper ore with rarity 2/128 in quantity 3Copper ore32/1281953

Oyster[edit | edit source]

Item Quantity Rarity Price High Alch
Oyster.png: Rock Crab drops Oyster with rarity 12/128 in quantity 2Oyster212/128130240
Oyster.png: Rock Crab drops Oyster with rarity 9/128 in quantity 1Oyster19/12865120
Empty oyster.png: Rock Crab drops Empty oyster with rarity 3/128 in quantity 1Empty oyster13/128Not sold3
Empty oyster.png: Rock Crab drops Empty oyster with rarity 1/128 in quantity 3Empty oyster31/128Not sold9
Oyster pearl.png: Rock Crab drops Oyster pearl with rarity 1/128 in quantity 1Oyster pearl11/12813367

Coins[edit | edit source]

Item Quantity Rarity Price High Alch
Coins_4.png: Rock Crab drops Coins with rarity 29/128 in quantity 4Coins429/12844
Coins_5.png: Rock Crab drops Coins with rarity 6/128 in quantity 8Coins86/12888
Coins_25.png: Rock Crab drops Coins with rarity 8/128 in quantity 36Coins368/1283636

Other[edit | edit source]

Item Quantity Rarity Price High Alch
This does not exist.NothingN/A19/128N/AN/A
Fishing bait.png: Rock Crab drops Fishing bait with rarity 2/128 in quantity 10Fishing bait102/1284010
Opal bolt tips.png: Rock Crab drops Opal bolt tips with rarity 2/128 in quantity 5Opal bolt tips52/12833020
Spinach roll.png: Rock Crab drops Spinach roll with rarity 1/128 in quantity 1Spinach roll11/128Not sold0
Casket.png: Rock Crab drops Casket with rarity 1/128 in quantity 1Casket11/12899030

Gem drop table[edit | edit source]

There is a 1/128 chance of rolling the gem drop table.

Item Quantity Rarity Price High Alch
This does not exist.NothingN/A1/256.47; Never[d 1]N/AN/A
Uncut sapphire.png: Rock Crab drops Uncut sapphire with rarity 1/512 in quantity 1Uncut sapphire11/512; 1/260[d 2]26315
Uncut emerald.png: Rock Crab drops Uncut emerald with rarity 1/1,024 in quantity 1Uncut emerald11/1,024; 1/520[d 2]49430
Uncut ruby.png: Rock Crab drops Uncut ruby with rarity 1/2,048 in quantity 1Uncut ruby11/2,048; 1/1,040[d 2]1,14360
Nature talisman.png: Rock Crab drops Nature talisman with rarity 1/5,461.33 in quantity 1Nature talisman11/5,461.33; 1/2,773.33[d 2]1882
Uncut diamond.png: Rock Crab drops Uncut diamond with rarity 1/8,192 in quantity 1Uncut diamond11/8,192; 1/4,160[d 2]2,945120
Loop half of key.png: Rock Crab drops Loop half of key with rarity 1/16,384 in quantity 1Loop half of key11/16,384; 1/8,320[d 2]10,99860
Tooth half of key.png: Rock Crab drops Tooth half of key with rarity 1/16,384 in quantity 1Tooth half of key11/16,384; 1/8,320[d 2]10,07160
Rune javelin.png: Rock Crab drops Rune javelin with rarity 1/16,384 in quantity 5Rune javelin51/16,384; 1/8,320[d 2]7901,200
Rune spear.png: Rock Crab drops Rune spear with rarity 1/262,144 in quantity 1Rune spear11/262,144; 1/15,600[d 2][d 3]11,90312,480
Shield left half.png: Rock Crab drops Shield left half with rarity 1/524,288 in quantity 1Shield left half11/524,288; 1/31,200[d 2][d 3]65,42166,000
Dragon spear.png: Rock Crab drops Dragon spear with rarity 1/699,050.67 in quantity 1Dragon spear11/699,050.67; 1/41,600[d 2][d 3]37,26337,440
  1. ^ The "nothing" drop is removed while wearing a ring of wealth.
  2. ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
  3. ^ 3.0 3.1 3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Tertiary[edit | edit source]

Item Quantity Rarity Price High Alch
Clue scroll (elite).png: Rock Crab drops Clue scroll (elite) with rarity Always in quantity 1Clue scroll (elite)1Always[d 1]Not sold12
Reward casket (elite).png: Rock Crab drops Reward casket (elite) with rarity Always in quantity 1Reward casket (elite)1Always[d 1]Not sold30
Clue scroll (easy).png: Rock Crab drops Clue scroll (easy) with rarity 1/128 in quantity 1Clue scroll (easy)11/128[d 2]Not sold12
  1. ^ 1.0 1.1 Elite clue scrolls or elite caskets are only dropped when completing a elite cryptic clue asking the player to kill a Rock Crab.
  2. ^ The easy clue scroll drop rate increases to 1/121 with the completion of the easy combat achievements.

See also[edit | edit source]